Study of the Rho-pi Puzzle in Charmonium Decays

Details Study of the Rho-pi Puzzle in Charmonium Decays Study of the Rho-pi Puzzle in Charmonium Decays

2006-11-16

arxiv.org/abs/hep-ph/0611214v2

High Energy Phys.Nucl.Phys.31:686-701,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages

Scientific paper

The theoretical explanations about the ``Rho-pi puzzle'' in charmonium decays are reviewed extensively, and the comparison of theoretical predications with experimental data is made whenever possible. Three methods to estimate the ratio of the branching fractions of J/psi and psi' decays are also discussed. It is pointed out that in order to understand the Rho-pi puzzle, and the dynamics of charmonium decays, systematic studies should be made in theory, phenomenology and experiment aspects.

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